Didn't work as expected after Lyme Vaccine in dogs

The FDA has received 4,661 reports of didn't work as expected in dogs after Lyme Vaccine. That is 67% of all reports for this medicine, compared with 13% across reports for all dog medicines, so it is reported unusually often with this medicine.

4,661Reports
23%Marked serious
2.0%Recovered
0.9%Died or euthanised
279 daysTypical onset
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How soon it started

Same day
40 2.0%
1–2 days
5 0.3%
3–7 days
5 0.3%
1–4 weeks
47 2.4%
Over a month
1,892 95%

How the animals did

Recovered
85 1.8%
Recovered with lasting effects
9 0.2%
Still unwell when reported
2,606 56%
Died
12 0.3%
Euthanised
32 0.7%
Not known
1,917 41%

Problems reported at the same time

Didn't stop ticks
2,224 48%
Drug dose omission
82 1.8%
Lethargy
50 1.1%
Vomiting
46 1.0%
Liver problems
46 1.0%
Lameness
45 1.0%
Loss of appetite
44 0.9%
Death
43 0.9%

Age of the animals

Under 1 year
591
1–3 years
2,423
4–7 years
986
8–11 years
514
12+ years
125

About this medicine

Type: vaccine.

Mild, short-lived lethargy, soreness or a small lump at the injection site are the most commonly reported vaccine reactions.

Questions owners ask

Can Lyme Vaccine cause didn't work as expected in dogs?
4,661 reports link the two, but a report alone does not prove the medicine was the cause: other illnesses, other medicines or coincidence can be involved. Your vet can judge it for your animal.
How soon after a dose was it reported?
In half of the reports with dates, it started within 279 days of the first dose.
What should I do?
Don't give another dose until you've spoken to your vet, and keep the packaging so you can tell them the product and dose. Your vet can also report it to the FDA (or you can, through the manufacturer or FDA form 1932a).

Didn't work as expected with similar medicines

All reported side effects of Lyme Vaccine in dogs · Medicines most reported with didn't work as expected